Arome-Indonesie
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Arome-Indonesie
Ghislain Faure
Météo-France
Short introduction to Arome-Indonésie
and NWP @Météo-France
13th March 2023
Toulouse
Global
(arpege)
Local
(arome)
schematic diagram
no cutoff, missing apps, ...
EDA
AEARO
AROME Fr
ARPEGE
EPS
AROME Fr
PEARO
AROME IFS
AROME OM
(x5)
AROME Assist
(x5)
PNT@MF
ARPEGE
NWP applications @ MF
(and dependancies)
EDA
EPS
Forecast
Data
assimi lation
Deterministic
Ensemble
AEARP
PEARP
- Arome atmospheric model,
coupled to Surfex land model
- 60" time-step, non-hydrostatic core
- Domain:
- 3000 x 1440 points at 2.5 km
- 90 vertical levels from 5 m to ~ 30 km
~ 389 millions of gridpoints
- Downscaling of Arpège global model, used for initial
conditions and lateral forcing (1 h frequency)
- Hourly outputs on native grid (FA format) and regular
lat-lon grid (GRIB format), up to +36 h lead-time
~ 1 To per day (forecast only)
Arome-Indonésie in a nutshell
ATOS BULL Sequana XH2000 «Belenos» and
«Taranis»
Each HPC: ATOS BULL Sequana XH2000
2292 computing nodes
Belenos computer
Taranis computer
In operations since February 2021
2 High Performance Computers
2 AMD Epyc Rome processors
with 64 cores at 2.25 Ghz
=>
Five fold increase in performance
than the previous HPC
10.39 PFlops
peak performance
IFS-Arpege-LAM common code
Continous evolution, 2 major releases a year,
testing & validation is very demanding
GitHub repo
Testing suite
Various tools (R&D)
- Compilation: gmkpack (home made)
- Scripting is based on
- a home made Python library (Vortex)
- a home made web based interface (Olive)
A particular NWP model is launched through the conjonction of:
* Environment files (ingredients)
* Specific Olive configuration (recipe)
- Manipulation & plot of fields: Epygram python library (home made)
-
and much more (observations, ...)
Resarch2Operations: 3 layers
R&D to improve NWP applications
DA & observations, physics, dynamics, EPS
Upgrade and validation of new code releases
Code optimizations, adaptation to new architectures
Versioning of all elements of all suites
Reproducibility tests
Dev and maintenance of scripting tools
Verification of all NWP applications
GMAP
(Research)
Forecast &
Validation
IT Operations
Real-time implementation (vortex)
24/7 monitoring
Data import & dissemination
1
Title
NWP
AromeIndonesie
ZoomOut
HPCs
Code
Tools
R2O
Final